Sir Keir Starmer ’s biographer has warned there is a “real chance” Labour will have to change leaders again before the next election if it ousts him from No 10 now. Tom Baldwin said he was “astonished” the party was “behaving like this” after Labour civil war erupted amid a chorus of calls for the prime minister to resign following the party’s disastrous local election results last week. As allies of health secretary Wes Streeting say they expect him to resign on Thursday to trigger a leadership challenge, Mr Baldwin called on Labour not to repeat the Conservatives’ “bad habit” of changing prime ministers. Keir Starmer met health secretary Wes Streeting for crunch talks ahead of the King’s Speech on Wednesday (James Manning/PA) (PA Wire) In an interview with The Independent, he said the moves against Sir Keir make Labour “look like an unserious party” and the UK “look like Italy in the 1980s… undermining our economy and undermining our security at a time of international crisis”.…